Billy Joel, Mumford & Sons, Kendrick Lamar Headlining Bonnaroo

.(Radio.com) The lineup for Bonnaroo 2015 is here! Rather than one major announcement, the Tennessee festival slowly unfurled its list of bands as the evening went on.

Beginning at 6 p.m. on Tuesday, Bonnaroo's BLAM event will slowly reveal the lineup by having fans call in to 1-844-ROO-2015 to get a piece of the puzzle to share on social media using the #bonnaroo hashtag.

Coming to Bonnaroo in 2015? Billy Joel, Mumford & Sons, Deadmau5 and Kendrick Lamar are among the headliners, with other artists including Florence + the Machine, Robert Plant and the Sensational Space Shifters, My Morning Jacket, Bassnectar and many more.

Tickets go on sale on Saturday, Jan. 17, at noon ET on Bonnaroo.com. General ticket information will be revealed at a later date, from general admission to VIP.